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Medical Term:

cloacal sphincter


the developing muscle surrounding the caudal end of the cloaca is sometimes referred to as the cloacal sphincter; after division of the cloacal membrane by the urorectal septum, the dorsal part of the sphincter forms the external anal sphincter.

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.